Gas-burner.



J. H. ACKROYD.

GAS BURNER.

APPLICATION FILED MAY 26, 915.

2 SHEETS-SHEET l WITNESSES: l/VVE/V 70R Patented July 25, 1916.

' A TTORA/EV J. H. ACKHOYD.

(ms BURNER.

APPLICATION FILED MAY 25. I915.

Patented July 25,1916.

,2 SHEETS-SHEET 2. 59' 7 37 5..- 58

WITNESSES:

I/VVENTUR ATTORNEY more srra ras earner curios.

JOHN H. ACKROYID, 0F HARTFORD, CONNECTICUT.

GAS-BURNER.

Specification of Letters Patent.

Patented July 25, 1916.

Application filed May 26, 1915. Serial No. 30,555.

To all whom it may concern Be it known that I, JOHN H. AcKRoYD, a citizen of the United States, residing at Hartford, county of Hartford, State of Connecticut, have invented an Improvement in tion of the gas used, in which the parts will not become unduly heated, and which will develop a maximum temperature with a mini-- mum amount of cross sectional area.

Other nnportant ob ects are to provide means whereby the secondary air required for combustion is distributed to all sides of the flame jets, to the end that the jets are caused to burn in an upright position, and means whereby the secondary supply of air is caused to flow, along with the flame jets which are produced from an initial mixture of gas and air, into the mantle, to-the end that combustion is completed and the maximum heat produced within the mantle, and a maximum amount of light producedwith a minimum consumption of gas.

The method employed in the well known incandescent gas light now in general use consists in producing a flame from an initial mixture of gas and air within the mantle, which flame entirely fills the mantle, and in supplying additional (secondary) air to this burning initial mixture after it has passed through the mesh opening of the mantle in order to complete the combustion. This additional (secondary) air, however, is supplied from a source outside the mantle to the outer surface of the mantle, and the combustion is completed on the outside of the mantle, at which point the maximum heat produced.

My present invention consists in certain constructions and in certain parts, improvements and combinations which will bo hereinafter pointed out in the claims hereunto appended.

In the accompanying drawings forming a part of this specification, Figure 1 is an elevation of my novel burner complete; Fig; 2 a view with the globe and guard in section,

described and then specifically.

the mantle and easing being in elevation; Fig. 3 a view on an enlarged scale partly in elevation and partly in section, of the mixing chamber and burner tubes detached;

Fig. 4: a plan view corresponding therewith;

Fig. 5 a plan view of the battle plate detached; Fig. 6 a view of the burner on an enlarged scale, partly in elevation and partly in section, the globe being removed; Fig. 7 a similar view illustrating certain changes in the details of construction; Fig.

8 a plan view with the mantle removed, corresponding with Fig. 6; Fig. 9 a view partly 1-n elevation and partly in section, with the mantle and globe removed, illustrating a variant form of air ports in the casing, and Fig. 10 is a plan view of the mantle detached.

20 denotes a mixing chamber for gas and air to which a supply pipe 21 leads, said pipe being provided with a valve 22 for regulating the supply of gas and with openings 23 for the admission of the primary a'ir supply. l/Vithin the chamber is a baflie plate 2%.

The gas and air are thoroughly mixed in the chamber and the mixture passes out through burner tubes 25 which are preferably placed at approximately equal distances apart in order to provide equal air spaces around them. Outside the mixing chamber is a tubular casing 26 which is secured in any suitable manner and the open end of which extends above the top of the burner tubes. This casing is provided with air ports 27 which increase in area from the top of the ports downward. These ports may be in the form of triangular openings, as in Figs. 2, 6 and 7, or there may be plurality of rows of openings increasing in size from the top downward as in Fig. 9. These ports distribute the secondary air supply to the flame jets and cause them to burn uprightly and in alinement with the mantle. As the area of these openings is relatively large and increases from the top downward, any rush of air to the outer surface of the flame jets is prevented and the jets are not caused to bend over inward away from the mantle.

. 28 denotes a guardwhich is secured to the casing above the air ports and extends outward and then downward over the air ports at such a distance from the casing as not to interfere with the passage of air to the ports, but preventing outside currents from affecting the flame jets. This guard isimperferate and open only at the bottom. At the 3 provided with an upturned edge and with 3 lower edge of the guard is an outwardly extending flange 29 which serves as a support for the globe 30. The flange .is shown as e tween the flange and the tubes equal to approximately'half the distance between the tubes. This flange may or may not be used, as found most desirable for different uses to which the burner may be applied. In Fig. 7 I have shown a form in which it is dispensed with. The effect of this flange is to assist in distributing the secondary air supply equally to the several flame jets'and to prevent an excess of secondary air from entering the heating chamber.

Any ordinary form of incandescing mantle may be used in my novel burner. I preferably, however, use a mantle consisting of a relatively coarse mesh skirt 32, formed in the usual manner from rare earths, which is secured to an imperforate head 33 made of magnesia or other refractory material.

In the form illustrated in Fig. '6, the head is provided'with a socket 3A which receives the upper end of a standard 35, the lower end of the standard being seated in a central socket 36 which is secured to and extends upward from the upper wall of the mixing chamber, see Figs. 3, 1 and 8.

In the form illustrated in Fig. 7, the head is provided with an eye 37 which is engaged by an arm 38. extending from a standard 39, the lower end of which is secured in a socket 410 secured to and extending upward from guard 28. In this form, an additional burner tube 41 may take the place of a socket 36 in the other form.

42 denotes a mantle guard, the upper edge of which is preferably flared outwardly as shown, in which the lower end of the skirt of the mantle lies and is thereby protected against breakage.

In the form illustrated in Fig. 6, the mantle guard consists of a sleeve formed integral with flange 31. In the form illustratedin Figs. 7 and'9, the mantle guard consists of the upper end of the casing which is flared outward as in the other form, to guide the mantle into theguard in assembling. t

In use, combustion of the mixture ,of gas and air is completed within the mantle and the products of combustion must pass outout at the top of the globe.

ward through the meshes of the mantle and It is essential that the meshes of the mantle skirt be relatively coarse, it being understood that not only the mixture of gas and the primary air supply, but also the secondary air supply must pass into the mantle and the products of combustion must pass outward through the meshes thereof.

Having thus described my invention I claim 1. A burner of'the character described comprising a mixing chamber, burner tubes leading therefrom, a casing surrounding the burner tubes and provided with air ports, and an imperforate guard secured to the casing above the air ports and extending outward and downward over said ports at a distance from the casing, said guard being open at the bottom only and preventing outside air currents (from affecting the flame jets.

2. A burner of the character described comprising a mixing chamber, burner tubes leading therefrom, a casing surrounding the burner tubes and provided with air ports which increase in area from the top downward, an inwardly extending flange in the casing curved tocorrespond with the curvature of the burner tubes and leaving a space between the flange and the tubes, an imperforate guard extending outwardly from the casing and means forming a heat chamber and resting on the guard.

5. A burner of the character described comprising a mixing chamber, burner tubes leading therefrom, a casing surrounding the burner tubes and provided with spaced apart side air ports, an imperforate guard over the air ports open at the bottom only, and a mantle guard extending above the tops of the burner tubes.

6. A burner of the character I described comprising a mixing chamber, burner tubes leading therefrom, a casing surrounding the burner tubes and provided with air ports, said casing extending above the tops of the burner tubes to form a mantle guard and 'the upper edge thereof being flared outoutwardly from the'casing, and means forming a heat chamber and resting on the imperiorate guard.

7. A burner of the character described comprising a mixing chamber, burner tubes leading therefrom, a central socket secured thereto, a mantle standard engaging said socket, a casing surrounding the burner tubes and provided with air ports which increase in area from the top downward, an imperforate guard extending outwardly from the casing, and means forming a heat chamber and resting on the guard.

8. A burner of the character described comprising a mixing chamber, burner tubes leading therefrom, a central socket secured thereto, a mantle standard engaging said socket, a casing surrounding the burner tubes and provided with air ports which increase in area from the top downward and extended above the tops of the burner tubes to form a mantle guard, an imperiorate guard extending outwardly from the casing, and means forming a heat chamber and resting on the imperforate guard.

9. In combination, a mixing chamber, burner tubes leading therefrom, a mantle of incandescing material, a casing surrounding the burner tubes and provided with air ports and extended above the tops of the burner tubes to form a guard for the lower end of the mantle, an imperforate guard extending outwardly from the casing, and means forming a heat chamber and resting on the imperiorate guard.

10. A gas burner comprising a gas and air mixing chamber having burner tubes leading therefrom, means for distributing a supply of air to all sides of the flame jets comprising a casing around the burner tubes provided with air ports which increase in area from the top downward, and an inwardly extending flange in said casing curved to correspond with the burner tubes but leaving a space between said flange and the tubes.

11. A gas burner comprising a mixing chamber having burner tubes leading therefrom, means for distributing a supply of air to all sides of the flame jets comprising a casing around said burner tubes provided @with air ports which increase in area from the top downward, and having an inwardly extending flange for the purpose set forth, and a heating chamber in communication with the outlet of said casing.

In testimony whereof I affix my signature.

JOHN H. ACKROYD.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents, Washington, D. G. 

